9to5Mac readers know a thing or two. When I reviewed Postbox, after explaining that I had lost patience with the flakiness of late of Apple Mail, several of the commentators recommended Airmail, a lightweight email client based on the popular but discontinued Sparrow app. It’s also the only alternative to Apple Mail and (of course) Outlook for those who need Exchange support.

Since then, Apple released OS X 10.9.1 with Mail fixes. It’s definitely better, but those unread mail counts still don’t update promptly, and my jury is still out (to put it nicely) on Gmail integration and other issues. As I mentioned before, so long as you use IMAP, switching back-and-forth between email apps is trivial, so I decided to give Airmail a try …

You would think a high profile app written by Apple specifically for OS X and supplied with every Mac sold would be as close to flawless as you can get. Sadly, this has not been the experience many of us have had with Apple Mail for quite some time – especially Gmail users.

While Apple Mail seems to have continued to work well for those with simple needs – a single email account, no filtering into folders – power users have experienced a whole succession of problems that Apple seems unable to fix.

Unread mail counts that take an age to update, deleted emails that reappear next time you click into an account, moves to folders that undo themselves, undo actions that don’t work and – most annoyingly of all – a mail list pane that remains blank when you switch account, sometimes for seconds, sometimes even for minutes at a time.

I finally lost patience with it and decided to look around at alternatives. I’d used Thunderbird before, so that was high on my list, and some googling pointed me to Postbox, an email client which uses Thunderbird as its engine but layers a prettier user-interface on top … expand full story